Oil-burner.



T. C. CURTISSQ OIL BURNER.

APPLICATION man Nov.29.1916.

1,240,683. Patented sept. 18,1917.

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OIL BURNER. APPLICATION FILED Nov. 29. 191e.

fam@ "M ATTORNEYS 'THEBON C. CURTISS, OF SAN FRANCESCO, CALIFORNIA.

OIL-BURNER.

Specication of Letters Patent.

Patented Sept. 18, 1917,

Application filed November 29, 1916. Serial No. 134,030.

To all 'whom t may concern.'

Be it known that I, THnRoN C. CURTISS, a citizen of the United States, and a resident of San Francisco, in' the county of San Francisco and State of California, have invented certain new and useful Improvements in Oil-Burners, of which the following is a specication.

My invention relates to oil burners, and the main object thereof is to provide revolving means for atomizing the fuel and for supplying air` under pressure thereto after having been atomized actuated by the fuel itself delivered to the burner under pressure, as by the pump commonly used with such burners, and a further object is to provide means for controlling the speed of revolution of the parts, for controlling the amount of fuel delivered to the burner, and for controlling the amount of air and the pressure thereof to be mixed with the atomized fuel.

My invention is fully described in the following speciication, of which the accompanying drawings form a part, in which like characters refer to like parts in each of the views, and in which Figure 1 is a longitudinal vertical sectio taken through a burner constructed in accordance with my invention;

Fig. 2 is a section taken on the line 2-2 of Fig. l, and

Fig. 3 1s a section taken on the line 3-3 of Fig. 1.

Referring to the drawings, 4 represents a support for a bearing member 5 and turbine housing 6 the latter of which has an inlet pipe 7 connected therewith and controlled by a valve 8, and an outlet pipe 9 leading to a tank not shown in which the fuel is stored, the pipe 7 also leading to said tank through a pump also not shown, as both tank and pump are commonly used and may be of any desired form.

Revoluble within the housing 6 is a turbine 10, of any desired form, secured to a cylindrical shaft 11 rotatably held in the bearing 5 and housing 6, as well as Within a member 12 extended forwardly of the latcontracted shell 17 open at the forward end, as shown at 18.

Secured to the shaft 11, adjacent the disk 13 within the shell 17, is a fan 19 the blades of which extend across the ports 14 and also secured to said shaft is a bell-2() the open end of which extends slightly beyond the end 18 of thc shell 17 and is in proximity thereto, as shown at 21, both the fan and bell being movable with the shaft 11 and the latter being rotatable by the turbine 10.

Immovably held in therbearing 5 and extending forwardly through and beyond the shaft 11 is a fuel supply tube 22 the end 23 of which is hooked within the bell 20 and is in close relationship with the wall of said bell, and the rear end of said tube 22 is connected with a pipe 24 connected With the return pipe 9 and provided with a control valve 25.'

The fuel under controlled pressure passes through the pipe 7 into the turbine housing 6 and causes the turbine 10 to revolve and, through the shaft 11, revolves the fan 19 and atomizing bell 20 at a speed determined by the fuel pump pressure and a portion of the fuel passes through the pipe 9 to the tank while a controlled portion thereof is drawn through the pipe 24 and fuel supply tube 22 and is delivered upon the inner surface of the revolving bell 20, air meanwhile being drawn throughthe disk 13, in the degree of port opening, and forced through the relatively small space between the ends 18 and 21 of the shell 17 and bell 20, respectively, where it mixes with the fuel atomized by the swirling eect of the revolving bell 20.

The turbine housing 6 being preferably made in sections, it is very easy to disassemble the structure, and I may make the parts of such proportions as are found most advantageous for the purpose to which the device is to be put, as for small and large furnaces, etc., particular fuels, or for any other reasons.

As herebefore stated, one of the distinguishing features of my burner is that of operation of the movable parts by means of the fuel itself, another is that ofdelivering the liquid fuel upon a revolving surface whereby the fuel is atomized by the swirling acture of the atomized fuel with a desired amount of air under a desired pressure as centrifugal force spreads the atomized fuel outwardly of the open mouth of the bell, and still another is the return of a portion of the turbine operating fuel to the-tank.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is:-

l. An oil burner, comprising a fuel supply pipe, a fuel supplyA tube, means operable by the fuel from said pipe for atomizing the fuel from said tube by imparting a swirling and centrifugal action thereto, and means operable by the fuel for supplying air under pressure at the mouth of the burner.

. 2. An oil burner, comprising a revoluble member operated by the fuel, means for delivering the fuel onto the revoluble member to atomize the same, and means also operated by the fuel for supplying air under pressure at Ythe outer end of the revoluble member.

3. An oil burner, comprising a shell open at its forward end, a revoluble bell therein having its open end adjacent the open end of said shell, a fuel supply tube within said bell, a fuel supply pipe, and means operable by the fuel from sald pipe for imparting a swirling and centrifugal action to the fuel from said tube.

4f. An oil burner, comprising a shell open at its forward end, a revoluble bell therein lazione@ having its open end adjacent the open end of said shell, controlled means for supplying air to the base of said shell, a fuel supply tube within said bell, and means operable by the fuel supply for revolving said bell.

5. An oil burner, comprising a shell open at its forward end, a revoluble bell therein having its open end adjacent the open end of said shell, controlled means for supplying air to said shell, a fuel supply tube within said bell, and means operable by the fuel supply for revolving said bell and for forcing air through said shell under pressure.

6. An oil burner, comprising a shell open at its forward end, a revoluble bell therein having its open end adjacent the open end of said shell, controlled means for supplying air to said shell, a fan adjacent said air supply means, a fuel supply tube within said bell, and means operable by the fuel supply for revolving said bell and fan.

7 An oil burner, comprising a shell open at its forward end, a support therefor, a turbine housing thereon, a cylindrical shaft rotatable in said shell, support, and housing, a turbine on said shaft, a fan on said shaft within said shell, a bell on said shaft within said shell, a controlled fuel supply pipe leading to said turbine, a fuel return pipe leading from said turbine, a fuel supply tube within said bell, and means for controlling the passage of fuel through said tube.

THERON C. CURTISS. 

